Spartan Firefight
Could be interesting
Super Contra is a Run and Gun-style action game produced by Konami, originally released as a coin-operated arcade game in 1988. It is the sequel to the original Contra and the second game in the Contra series released for the arcades. Like in the original game, the game centers on soldiers Bill Rizer and Lance Bean, who are once again assigned to protect the Earth from an army of alien invaders. The game features standard side-scrolling stages, as well as all new overhead stages in lieu of the original game's "3D" stages.
Codename: Gordon, also known as Half-Life 2D, is a two-dimensional Flash sidescroller shooter game made by Paul "X-Tender" Kamma and Sönke "Warbeast" Seidel. The game was produced on behalf of Nuclear Vision, and was distributed free of charge over Valve Software's Steam online delivery system as a promotional title for the then-upcoming Half-Life 2. The game has since been removed from Steam's storefront due to factors related to the developer's bankruptcy. The game started off as a fan project of Paul Kamma and Sönke Seidel, the concept being inspired by various Half-Life 2 advertisements. Soon after, the two started working on Codename: Gordon on behalf of Nuclear Vision. The company also presented the game to Valve, the developer team of the original Half-Life series, who later distributed the game through Steam.
Join Section 9 in a first person shooter experience. Become a member of an elite force of cybernetically enhanced combat operatives dedicated to the defense of society, and use your advanced firepower, Tachikoma Tanks and unique cyber skills to bring down cyber terrorists in a connected world.
A fan-made freeware sidescrolling shooter based on the Halo series, featuring both single-player and multiplayer modes
Mega Man X: Corrupted is an unofficial, fan-made game in development by John K. Bacchus (also known as JKB) coded in AS3 using Flex compiler on Flash Develop, but as Flash was phased out at the end of 2020, it was switched to HTML5. The game is modeled after the MMX series' features and gameplay, in the graphic style of the SNES Mega Man X games, with a non-linear interconnected environment, and skill trees to enhance characters and weapons. This title is currently still in development, but will be free on launch.
Doom 2D is a fan-made DOS-based freeware side-scrolling video game based upon Doom. Doom 2D is essentially the original Doom translated into a two-dimensional arcade or console-like shooter. The player resumes their role as Doomguy, who must do battle with various hell-spawn.
Arm yourself with a vast array of weapons, equipment, and abilities to fight aliens, zombies and robots to save the earth. Or become the enemy and fight to destroy it.
Metroid Planets is a Fan Remake of the 1986 Nintendo Entertainment System game Metroid created by vacantshade. It updates Samus' movement and adds a saving system, among other features. The game is called Metroid Planets because of its multiple maps. Planet Zebeth is a remake of the original Metroid. Planet Novus is a whole new map with new bosses and new areas. Selecting Planet Enigma will bring you to a room creator and a map generator that uses those rooms to create a world. (If you go to the Discord linked in the game menu, you can download a room pack and upload your own rooms.) The game also has online multiplayer.
Soda Crisis is a fast-paced side-scrolling shooter game. You play a mysterious character of unknown origin, equipped with advanced high-tech gears and fierce combating skills - definitely the chosen one for this rescue mission!
So.... got what it takes to be a X Slayer?!?... 7 weapons, blood and gore, twisted music by Seepage & Psyko Syndikate, and maps where you can blow up everything. its awesome. started making it in 1998 in high school with my friend and now im 37, so i have life experience now.